EDIT Minus is the mathematical character for substraction.
Do not confuse with:

- U+002D HYPHEN-MINUS (on the keyboard)
– U+2013 EN DASH
— U+2014 EM DASH
― U+2015 HORIZONTAL BAR

If the minus isn\'t available, it should be replaced with an en-dash.
 
 jsw 
ADD NEW PARAGRAPHWIKI
ADD NEWSIMILAR CHARACTERS
PLUS SIGN
U+002B
PLUS SIGN
HYPHEN-MINUS
U+002D
HYPHEN-MINUS
HYPHEN
U+2010
HYPHEN
FIGURE DASH
U+2012
FIGURE DASH
EN DASH
U+2013
EN DASH
EM DASH
U+2014
EM DASH
HORIZONTAL BAR
U+2015
HORIZONTAL BAR
CIRCLED MINUS
U+2296
CIRCLED MINUS
<CJK Ideograph, First>
U+4E00
<CJK Ideograph, First>
 < CHARACTER >  BLOCK PROPERTIES
U+2212 MINUS SIGN
DEUTSCH : ENGLISH